public class Hello{
   System.out.print("holle word!!!");
   private String aa;
   int i = 20;
   int u = 10;
   System.out.print("i+u=" + (i + u));
   System.out.print("i-u=" + (i - u));
   System.out.print("i*u=" + (i * u));
   System.out.print("i/u=" + (i / u));
}
